Improvement in pianos



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Letters Patent No. 106,661, :lated August 23, 1870.

IMPROVEMENT IN PIANOS.

,The Schedule referred to in these Letters Patent and making part of the same 1 '0 all whom it may con-cern Be it known thut I, CHARLES FREDERICK CuEw, of George street, Chalk-Farm rond, in the count-y of Middlesex, Engin-nd, hure inivented Inmrovements in Iiunofbrtes und I do hereby dechire tlmt the following is a. full and exact description thereof, referenee being hud to the accompanying drawing, und to the letters of reference marked thereon.

'lo enable others skilled in the. ort to make und use my invention, I will proceed to describe its construetion and operation.

My invention consists in strengthening the parts of the wire where it genera-ily breaths by twisting :mother piece of wire or string with it.

It also consists in ineens of strengthening the soundbourd.

1n the drznving-- l Figures tand 2 illustrate respectively the two ports of my invention.

A represents :L pin, en whielr is to be wound the string D.

This string has its end twistedl double at l), which is the. pzlrt that is liable t0 bren-k when wound on the pin, and by the double twist the string is rendered very strong.

The burs which support the sound-board have been heretofore mude of wood; but this is objectionable from the fnet that the bnrs lose their shape bythe continued pressure of the strings on the soiind-lnmrd.

I propose to remedy this defect ls follows:

I form :t kerf or groove :tt or about the middle 0f the bur C, :md insert therei i :t thin piece of steel or other metul, the entire length of the bnr. It will be seen tlnit the sound-Imiird or belly E is greatly stitfened und strengthened in e sin'iple und pruetieul manner.

Having thus described my invention,

XVhnt i claim es new, and desire t0 secure by Letters Patent, is-

l. The ends ofstrings formed oFtwo or more twisted fitnesses A. BuowNE, S5 Graccclmrch street, T. A. SAUL'DERS. London, E. C, 

